La Rioja is 1.04× the size of Chiba
La Rioja (autonomous community of Spain) covers about 5,330 km² (2,060 mi²) and Chiba (prefecture of Japan) about 5,110 km² (1,970 mi²). Below, both outlines are drawn at one scale and centred on each other.
- 5,330km²La Rioja
- 5,110km²Chiba
20 km
- La Rioja
- Chiba
What fits
- Chiba is 96% of the size of La Rioja.
- La Rioja is larger by 220 km² (85.1 mi²), which is 4.3% of the area of Chiba.
- Measured in Belgiums: La Rioja is about 0.17, Chiba about 0.17.
How they differ
- La Rioja is larger, but Chiba has the larger population: 6.3 million against 324,000, 19.4× as many people.
- Per square kilometre that is 1,228 in Chiba against 61 in La Rioja: Chiba is 20.2× as densely populated.
- Their centres are about 10,600 km apart.
- A standard web map misstates the comparison: La Rioja at 42°N is drawn about 1.8× too large and Chiba at 36°N about 1.5×, so the map shows La Rioja as 1.26× the size of Chiba instead of 1.04×.
- Together La Rioja and Chiba cover 10,400 km², close to the size of Gambia (10,500 km², 0.6% bigger).
- The gap between them, 220 km², is about the size of Saint Kitts and Nevis (264 km²).
- At Chiba's density, La Rioja would have 6.5 million people (it has 324,000). At La Rioja's density, Chiba would have 311,000 (it has 6.3 million).
- La Rioja's centre is 6.8° of latitude, about 750 km, farther north than Chiba's.
- La Rioja is the 16th largest of the 19 autonomous communities and cities of Spain and covers 1.1% of its area; it is the 15th most densely populated of them.
- Chiba is the 27th largest of the 47 prefectures of Japan and covers 1.4% of its area; it is the 6th most densely populated of them.
- La Rioja lies about 7° of latitude (roughly 753 km) north of Chiba.
- Shared out evenly, each person in La Rioja would have about 16,440 m² and each person in Chiba about 810 m².
- Laid side by side, La Rioja and Chiba would cover 10,400 km², about the same size as the Gambia.
- Together they have 6.6 million people, about as many people as Serbia.
Side by side
| La Rioja | Chiba | |
|---|---|---|
| Is a | Autonomous communitySpain | PrefectureJapan |
| Area, measured | 5,330 km²2,060 mi² | 5,110 km²1,970 mi² |
| Official area | 5,050 km²Wikidata | 5,160 km²Wikidata |
| Rank by area | 16th of 19in Spain | 27th of 47in Japan |
| Population | 324,000Wikidata, 2024 | 6.3 millionWikidata, 2021 |
| Rank by population | 17th of 19in Spain | 6th of 47in Japan |
| Density | 61 per km² | 1,228 per km² |
| Capital | Logroño | Chiba |
| Latitude range | 42°N to 43°N | 35°N to 36°N |
Population: Wikidata 2024 and Wikidata 2021. Official figures: Wikidata (CC0).
- Our measured 5,330 km² is 5.7% above Wikidata's official figure of 5,050 km². Official figures can include inland water or count land that an outline draws differently. This difference is flagged for review.
- Wikidata's official figure of 5,160 km² agrees with our measured area of 5,110 km², to within 2%.
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Sources and method
- Outlines
- Natural Earth, 1:10m Admin 1 - States, Provinces, public domain
- Boundary
- De facto, as drawn by Natural Earth. A region is drawn whole, every island included; a country is its main territory.
- Area
- Measured on the WGS84 ellipsoid from the full-detail outlines, shown rounded.
- Drawing
- Each outline is projected with an equal-area projection centred on its own centroid, so areas stay true and the two can be laid over each other.
- Data built
- 2026-11-12